//C06 6.17 rows1.c
#include <stdio.h>
#define ROWS    6
#define CHARS    10

int main(void)
{
    int row;
    char ch;

    for (row = 0; row < ROWS; row++)
    {
        for (ch = 'A'; ch < ('A' + CHARS); ch++)
        {
            printf("%c", ch);
        }
        printf("\n");
    }
}